Patent US3329620A successfully refreshed from Google Patents.
US3329620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel phosphorus sulfide product and method for its manufacture
Assignee: Hooker Chemical Corp
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Filing: 1963-04-01
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Granted: 1967-07-04
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Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 John H Schmadebeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:05
CPC Classifications
C; C01; C01B; C01B25/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
A PROCESS FOR MAKING A PHOSPHORUS SESQUISULFIDE COMPOSITION WHICH HAS A HIGH AUTO-IGNITION TEMPERATURE AND IS SUBSTANTIALLY DUST FEE WHICH COMPRISES REACTING PHOSPHORUS AND SULFUR AT A TEMPERATURE ABOVE 200*C. IN PROPORTIONS OF SUBSTANTIALLY FOUR PARTS OF PHOSPHORUS TO THREE PARTS OF SULFUR SO AS TO YIELD A MOLTEN PHOSPHORUS SESQUISULFIDE, SPRAYING THE RESULTING MOLTEN PHOSPHORUS SESQUISULFIDE PRODUCT UNDER THE SURFACE OF A BODY OF A SATURATED ALIPHATIC OIL, FORMING A SLURRY OF THE PHOSPHORUS SESQUISULFIDE IN THE OIL, AND SEPARATING A PORTION OF THE OIL FROM THE RESULTING SLURRY.
References Cited (Backward Citations)
DE247905C
Cited
US1153054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |